TY  - CPAPER 
AB  - This paper assesses the agricultural water consumption and productivity of the predominant crop paddy rice and wheat for the Indo-Gangetic river basin (IGB) in South Asia. A new approach was adopted in the study to integrate census, remote sensing and weather data to assess crop water productivity (WP) across large scale. The average paddy field ET for rice for major growing period of June 10 to October 15 is 416 mm, which is 70% of rice potential evapotranspiration (ETp, equals to ET0*Kc). Average rice water productivity is 0.74 kg/m3. The average evapotranspiration (ETa) and WP of wheat is 299 mm and 0.94 kg/m3 respectively. Significant variations were observed for the ETa, yield and WP of rice and wheat. The scope for improvement of water productivity could be assessed by comparing “hot” and “bright” spots in consultation with factors such as rainfall and topography. It is found while improving yield in long term will finally lead to improved WP, reducing non-beneficial ET from low yield areas is a effective approach to improve WP in short term. Integrated land, crop and water management is the key to sustainable development of the region.
AU  - Cai, Xueliang
AU  - Sharma, Bharat R.
AU  - Matin, Mir Abdul
DA  - 2010
DA  - 2010
DO  - 10.22004/ag.econ.211315
DO  - doi
ID  - 211315
KW  - Agribusiness
KW  - Agricultural Finance
KW  - Crop Production/Industries
KW  - Farm Management
KW  - International Development
KW  - Productivity Analysis
KW  - Rice
KW  - Wheat
KW  - Cultivation
KW  - Water productivity
KW  - Irrigated farming
KW  - Evapotranspiration
KW  - Remote sensing
KW  - South Asia
KW  - Nepal
KW  - India
KW  - Pakistan
KW  - Bangladesh
KW  - China
KW  - Afghanistan
KW  - Indo-Gangetic River Basin
L1  - https://ageconsearch.umn.edu/record/211315/files/H043387.pdf
L2  - https://ageconsearch.umn.edu/record/211315/files/H043387.pdf
L4  - https://ageconsearch.umn.edu/record/211315/files/H043387.pdf
LA  - eng
LK  - https://ageconsearch.umn.edu/record/211315/files/H043387.pdf
N1  - Paper presented at the 3rd International Perspective on Current and  Future State of Water Resources and Environment, Chennai, India, 5-7 January 2010. Paper No.270.
N2  - This paper assesses the agricultural water consumption and productivity of the predominant crop paddy rice and wheat for the Indo-Gangetic river basin (IGB) in South Asia. A new approach was adopted in the study to integrate census, remote sensing and weather data to assess crop water productivity (WP) across large scale. The average paddy field ET for rice for major growing period of June 10 to October 15 is 416 mm, which is 70% of rice potential evapotranspiration (ETp, equals to ET0*Kc). Average rice water productivity is 0.74 kg/m3. The average evapotranspiration (ETa) and WP of wheat is 299 mm and 0.94 kg/m3 respectively. Significant variations were observed for the ETa, yield and WP of rice and wheat. The scope for improvement of water productivity could be assessed by comparing “hot” and “bright” spots in consultation with factors such as rainfall and topography. It is found while improving yield in long term will finally lead to improved WP, reducing non-beneficial ET from low yield areas is a effective approach to improve WP in short term. Integrated land, crop and water management is the key to sustainable development of the region.
PY  - 2010
PY  - 2010
T1  - Current status and scope for improvement of agricultural water productivity in the Indo-Gangetic River Basin
TI  - Current status and scope for improvement of agricultural water productivity in the Indo-Gangetic River Basin
UR  - https://ageconsearch.umn.edu/record/211315/files/H043387.pdf
Y1  - 2010
ER  -